What are the common failures of the baoding dry transformers in operation? How to solve it effectively? Baoding dry transformer manufacturers summary:
The common failures of the baoding dry type transformer in operation are:
(1) when the transformer is sent or tested after the shutdown, it is often found that the voltage is abnormal, such as the low or zero indication of the two phases; Some of the new transformer three-phase voltage is very high, which makes some electrical equipment burn down due to high voltage;
(2) the fuse of high voltage fuse cannot be connected with electricity;
(3) the transformer cannot be delivered after the thunderstorm;
(4) abnormal sound of the transformer, such as "creak" or "crack"; In the running, such as the frog "waw", and so on;
(5) the high voltage terminal is burned, and the high pressure casing is badly damaged;
(6) in the normal cooling condition, the transformer is abnormal and rising;
(7) the oil color changes excessively, and the carbon in the oil;
(8) the transformer emits a roar, from the safe airway, oil storage tank to spray oil, oil tank and heat pipe deformation, oil leakage, oil seepage, etc.
The following measures can be taken to effectively solve the common failure problems of baoding dry transformers in operation:
(1) in the new substation, high and low voltage fuse should be installed according to the standard. In the operation of the transformer, if the fuse is found to be burnt down or stolen, it shall be replaced in time.
(2) reasonable configuration of high and low voltage fuse parts:
The transformer with capacity of 100kVA shall be equipped with a fuse of 1.5~2.0 times rated current;
The transformer with capacity below 100kVA shall be equipped with a fuse of 2.0~3.0 times rated current;
The low-pressure side fuse should be selected according to the rated current.
(3) to strengthen the actual measurement of power load. During the peak period, the tongs type ammeter is used to measure each load, adjust the load reasonably, and avoid the unbalanced operation of the three phases.
(4) it is generally not allowed to adjust the tapping switch in the range of + 7% ~ -10% for the 10kV distribution transformer. When adjusting the tapping switch, it shall be adjusted by the test technician.
(5) periodically check whether the three-phase current is balanced or exceeds the rated value. If the three load current is seriously unbalanced, the adjustment should be taken timely.
(6) before the annual thunderstorm season; All lightning arresters on the distribution transformer shall be sent to the repair and test department for inspection, and installed in time after the test is qualified.
(7) the following inspection should be done before the operation:
The load is divided into three times, and it is not to be misused.
The experiment button should be used for three times to make correct action.
The test resistance ground test three times, should correct action.
(8) regularly clean the dirt on the surface of the distribution transformer bushing, check whether there is any flashover trace on casing, grounding are in good condition, the grounding lead used in the presence of broken stocks, desoldering, fracture phenomenon, with a megger test grounding resistance shall not be Ω > 4.
Billion in baoding electric materials co., LTD is specialized in the production of transformer baoding transformer factory manufacturers, with professional production equipment, hoisting, tooling and testing equipment, established a perfect quality management system, product performance indicators have reached the standard.
Company's main products: baoding dry type transformer, baoding box transformer, baoding oil immersed transformer, baoding high and low voltage complete equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.
